Binder for stationery sheets



0a. 15, 1946. F N 2,409,426

BINDER FOR STATIONERY SHEETS Filed Nov. 27, 1944 JTTORA/EY-Sf.

Patented Oct. 15, 1946 UNITED STATES PATENT OFFICE Application November27, 1944, Serial No. 565,319 In Great Britain June 6, 1944 1 Claim. 1

This invention relates to binders for stationery sheets to form notebooks, catalogues or the like, of the type in which the sheets and twocover sheets are bound together by means of rings which engage throu hperforations in the sheets and cover sheets. This invention has for itsobject a construction which is more convenient in use and in which the bund sheets and the cover sheets have lateral stability.

According to the present invention, the rings are passed throu hperforations in a hinge strip connecting the inner ends of the coversheets. This strip when the book is closed lies inwardly between thecover sheets. and slots are rovid d in the cover sheets to engage therin s. The strip connectin the two cover sheets is adapted to foldinwardly between the cover sheets in a V-shaped form and the rin s passthrou h perfora ions in the two s des of the V-shaped strip and throughthe stationery sheets between the covers.

Referring to the drawing.

Fig re 1 is a face view of a binder constructed ac ording to thisinvention.

Figure 2 is an end elevation of the binder partly open.

Fi ure 3 illustrates the binder opened out fiat and w thout stationerysheets.

Fi ure 4 is a section on line .r-a: of Figure 1, drawn to an enlargedscale.

F gure 5 is an inside view of the binder as shown by Figure 8, butshowing stationery sheets in the binder. and

Figure 6 is a face view of a modified form of binder.

According to a convenient embodiment of this invention. the two coversheets I are formed of cardboard or other suitable stiiT material andthe backs are connected by a flexible or hinge strin 2 of strong pa eror other suitable material. The strip connecting each back is creased orgrooved at 3 near each end of the cover sheet and also in the centre at4 and is adapted to fold inwardly in a V-shaped form between the coversheets, the creasing being s ch that the connecting strip 2 has anatural tendency to fold inwardly in a V- shaped form. Two binding rings5 each pass through two perforations 6 in the connecting strip which arein register or lie opposite one another when the V-shaped strip isfolded inwardlv. and the stationery sheets 9 have perforations 1 thereinwhich are engaged by the rings. The rings 5 before insertion are open atthe joint and after being threaded through the connecting lie betweenthe covers and inwardly of the inner end of the cover sheets, as shownby Figure 4.

When the book is closed the rings 5 are protected by the covers so thatthey will not damage the lining of a pocket, as is the case when therings 5 lie outside the bound end of the book. As the rings 5 engage theslots 8 in the cover sheets lateral support is given to the ringsthereby holding the stationery sheets 9 against undue lateral movement.The connecting or hinge strip 2 also imparts lateral stability at thebound end of the book. When the book is opened, as the rings passthrough two perforations in the connecting strip, they are held againstundue lateral movement which prevents sloppiness of the stationerysheets. The connecting or hinge strip gives great flexibility at thebound end of the sheets, and the book can be opened, whilst theconnecting strip is in V-form, or the book can be opened with theconnecting strip 2 pulled out in alignment with the cover sheets I Thebook can be opened out and folded back with the cover sheets I lying oneagainst the other or the book can be opened out and supported On a tab1ewith the covers forming a V-shaped stand and with the stationery sheetson the outside. The slots 8 in the cover sheets which are engaged by therings tend to hold the book in the closed position. These slots may bestraight longitudinal slots III as shown by Figure 6, or the slots maybe shaped so that they are narrower at the centre than the thickness ofthe ring as shown by Figure 3, so that when the book is closed thecentre projections Be at the sides of the slot are spring engaged insidethe rings to thus hold the book in the closed position.

I claim:

A binder for stationery sheets, comprising two cover sheets of stiffmaterial, a hinge strip foldable at each edge on the cover sheets andflexible at the centre and connecting the inner ends of the cover sheetsand arranged to lie inwardly of the cover sheets when the binder isclosed. perforations in the hinge strip equidistant from thelongitudinal centre. to lie opposite one another when the binder isclosed, a binder ring for holding the stationery sheets fixed to thebinder by engaging through the two perforations in the hinge strip whichpermit the hinge strip to open out or fold on itself by the perforationssliding on the ring, and a slot in each cover sheet with the slotregistering with the ring in the hinge strip when the binder is closed,such slots having an inward projection at the side for clipping insidethe binder ring.

HUGO FELDMANN.

